English Original
One day, the teacher asked Peter, "How much is four minus four?" Peter was tongue-tied.
The teacher got angry and said, "What a fool! Think about it. If I put four coins in your pocket, but there's a hole and they all leak out, what's left in your pocket?"
"The hole," replied Peter.
中文翻译
一天,老师问彼得:“四减四等于几?”彼得张口结舌,答不上来。
老师生气地说:“真笨!你想想,如果我把四枚硬币放进你的口袋,但你的口袋有个洞,硬币全漏掉了,那你口袋里还剩下什么?”
“那个洞,”彼得答道。